site redirecting to index.php

Hello. Did anyone have issues with setting up a new domain and site redirects to index.php?Seems odd since testing this Mobirise-created site in another directory and it works fine, but the new site isn't working. We are talking to our hosting provider, but they don't see any issues on their end so far.Just wondering why index.php, since we only use index.html for our site.Thank you for any ideas as to why this could be happening!